<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>Document</title>
  <link rel="stylesheet" href="message.css">
</head>
<body>
  <div>
    <h1>留言板</h1>
    <ul></ul>
    <textarea placeholder="请编辑您的留言"></textarea>
    <button class="sub">发布</button>
  </div>
  <script>
   </script>
</body>
</html>